 /*修改提示文字的颜色*/
 input::-webkit-input-placeholder { /* WebKit browsers */ 
    line-height: 22px !important;
    color: rgba(184, 184, 184, 100) !important;
    font-size: 14px !important;
    text-align: left !important;
    font-family: PingFangSC-Regular !important;
    } 
input:-moz-placeholder { /* Mozilla Firefox 4 to 18 */ 
    line-height: 22px !important;
    color: rgba(184, 184, 184, 100) !important;
    font-size: 14px !important;
    text-align: left !important;
    font-family: PingFangSC-Regular !important;
} 
input::-moz-placeholder { /* Mozilla Firefox 19+ */ 
    line-height: 22px !important;
    color: rgba(184, 184, 184, 100) !important;
    font-size: 14px !important;
    text-align: left !important;
    font-family: PingFangSC-Regular !important;
} 
